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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
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0
90°
180°
360°
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Question # 2
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Question # 3
If a2 = b2 then
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a = b
a+b= 1
|a+b| =0
None
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Question # 4
The number z so that the triangle with vertices A(1,-1,0),B(-2,2,1)and C(0,2,z) is a right triangle with right angle at vertex C
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1,2
-1,-2
2,-1
-2,1
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Question # 5
If the angle between two vectors with magnitude 2 and 15 is 30
°
then their scalar product is
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15
30
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Question # 6
If uv= Projuv then
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Uandvare parallel
vis a unit vector
Uis a unit vector
Both b and c
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Question # 7
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Question # 8
3j . k x i
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0
1
3
9
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Question # 9
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 10
Which of the following represents a vector
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(x, y)
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Question # 11
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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Question # 12
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Question # 13
If a,b,c are three non-coplanar vector then [a +b,b +c,c +a] = _____
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[a.b.c]
2[a,b,c]
[abc]-2
2[abc]2
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Question # 14
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Question # 15
If θ be angle between u,v and u,v determine the sides of a triangle then the third side opposite to angle θ has length
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|u+v|
|u|+|v|
|u-v|
|u|-|v|
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Question # 16
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Question # 17
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none of these
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Question # 18
If the angle between two vectors with magnitude 6 and 2 is 60° when their scalar product is
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12
6
3
0
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Question # 19
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Question # 20
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0
1
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Question # 21
Which of the following is a scalar.
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electric field
magnetic field
weight
mass
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Question # 22
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Question # 23
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0
1
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Question # 24
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direction ratios
direction cosines
direction angles
none of these
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Question # 25
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Question # 26
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none of these
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Question # 27
The position vector of the point P(a, b, c) is
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Question # 28
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Question # 29
Which of the following is not a unit vector
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[1, 1, 1]
[0, 1, 0]
[0, 0, 1]
[1, 0, 0]
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Question # 30
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 31
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none of these
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